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Method for extracting and utilizing active ingredients in potato dregs

A potato dregs and potato dregs technology is applied in the field of comprehensive utilization of potato dregs, can solve the problems of waste, not potato dregs and the like, and achieves the effects of novel method, novel hair method and large development space.

Inactive Publication Date: 2016-01-06
NEIJIANG NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above several application approaches have utilized potato residues to a certain extent, there is still a lot of waste, which is not an ideal and reasonable way out for potato residues. Therefore, how to find out an effective way to fully and rationally utilize potato residues as soon as possible is of great importance. The development of the potato starch industry remains crucial

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Crush the raw potato residues to 80 mesh and dry at 60°C for 10 hours; take 20 g of dried potato residues and wash them with water for 5 times under agitation; boil the washed potato residues in a water bath at 90°C for 9 hours, and collect the potato residues by centrifugation , dried at 60°C to constant weight; take 5g of dried potato residues and add them to a beaker, add 2% medium-temperature α-amylase, 1% pullulanase, 1g sodium benzoate, 100ml of pH=5.6 buffer solution to the beaker , stirred and reacted at 60°C, took the upper layer at t=19h, calculated the yield of reducing sugar by spectrophotometry, and the yield of reducing sugar was 69.3%; 6g of ionic liquid 1-butyl-3-methyl Imidazole chloride was added in a 25mL round-bottomed flask, and the oil bath was heated until the ionic liquid became a clear liquid; 0.1 g of the laboratory-made chitosan-based solid catalyst was added to the flask, and the oil bath was heated until the mixed solution became a homogeneou...

Embodiment 2

[0035]Crush the raw potato residues to 80 mesh and dry at 60°C for 10 hours; take 20 g of the dried potato residues and wash them with water three times under agitation; boil the washed potato residues in a water bath at 90°C for 5 hours, and collect the potato residues by centrifugation , dried at 60°C to constant weight; take 5g of dried potato residues and add them to a beaker, add 1% mesophilic α-amylase, 0.05% pullulanase, 0.5g sodium benzoate, PH=5.6 buffer solution to the beaker 100ml, stirred and reacted at 60°C, took the upper layer at t=19h, calculated the yield of reducing sugar by spectrophotometry, and the yield of reducing sugar was 63.1%; 4g of ionic liquid 1-butyl-3-methan The imidazole chloride is added in the 25mL round-bottomed flask, and the oil bath is heated until the ionic liquid becomes a clear liquid; in the flask, 0.05g of the homemade chitosan-based solid catalyst is added, and the oil bath is heated until the mixed solution becomes a homogeneous liqu...

Embodiment 3

[0037] Crush the raw potato residues to 60 mesh and dry at 50°C for 7 hours; take 15 g of dried potato residues and wash them with water for 5 times under agitation; boil the washed potato residues in a water bath at 90°C for 5 hours, and collect the potato residues by centrifugation , dried at 50°C to constant weight; take 5g of dried potato residues and add them to a beaker, add 2% medium temperature α-amylase, 1% pullulanase, 1g sodium benzoate, 100ml of pH=5.6 buffer solution to the beaker , stirred and reacted at 52°C, took the upper layer at t=19h, calculated the yield of reducing sugar by spectrophotometry, and the yield of reducing sugar was 59.3%; 6g of ionic liquid 1-butyl-3-methyl Imidazole chloride was added in a 25mL round-bottomed flask, and the oil bath was heated until the ionic liquid became a clear liquid; 0.1 g of the laboratory-made chitosan-based solid catalyst was added to the flask, and the oil bath was heated until the mixed solution became a homogeneous...

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PUM

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Abstract

The invention relates to a method for separating starch and cellulose in potato dregs in advance, and then carrying out enzymolysis on the starch and carrying out solid acid hydrolysis on the cellulose to prepare reducing sugar. The method comprises the following steps: firstly, removing soluble starch and solid impurities in the potato dregs through a water washing method and a water boiling method, then carrying out enzymolysis on the starch in the potato dregs by adopting middle-temperature alpha-amylase and pullulanase to prepare the reducing sugar, wherein the yield of the reducing sugar is greater than 60%, and finally, by taking ionic liquid as a solvent, and taking the laboratory home-made chitosan-based solid acid (has been patented) as a catalyst, magnetically stirring the potato dregs containing the cellulose at 120-150 DEG C under normal pressure, thus preparing the reducing sugar with high concentration, wherein the yield of the reducing sugar is greater than 45%. In the implementation of the method, few equipment is needed, the operation process is simple, the condition is mild, the environmental protection purpose is achieved, the energy consumption is low, the cost is low, the amount of by-products is small, the yield of the reducing sugar is high, the utilization of the potato dregs can be realized to the greatest extent, and therefore, the method is one of the optimum schemes for development and utilization of the potato dregs.

Description

1. Technical field [0001] The invention belongs to the technical field of comprehensive utilization of potato dregs, and in particular relates to a method for separately degrading starch and cellulose to generate reducing sugar. 2. Background technology [0002] China is the world's largest potato producer, about 16% of which is used for starch processing. The development of the potato starch industry has driven the economic development of the main potato producing areas. In order to make full use of the local resource advantages, various specifications of factories have been built all over the country. The potato starch factory has brought good economic benefits, but it also produced a lot of waste liquid and waste residue. Potato starch processing seasons are relatively concentrated, and the production of potato residues is also relatively concentrated. A large amount of residues are accumulated, which not only takes up space, but is also difficult to store and transport. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/16C12P19/14C13K13/00
CPCY02P20/54
Inventor 魏顺安司文青李奕辰张永红何方
Owner NEIJIANG NORMAL UNIV
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